When eye fluid, known as the aqueous humor, isn’t circulating properly, intraocular eye pressure (IOP) can increase. Normally, this fluid drains out of the eye through a mesh-like channel; however, if this channel is blocked, the fluid has nowhere to go, causing IOP to increase. [Read more…]
According to new research from the National Bureau of Economic Research, Americans over the age of 65 are living longer. Between 1992 and 2008, healthy life expectancy at age 65 increased by 1.8 years, and two treatments contributed: better cardiac care and cataract surgery. Those who opt for cataract surgery also experienced fewer falls, injuries, and disabilities.
“Older people who have eye surgery to remove cataracts and improve their vision also significantly reduce their risk of breaking a hip in a fall, […] those in their early 80s experiencing nearly 30 percent fewer hip fractures in the first year […],” explained author Roni Caryn Rabin, The New York Times. [Read more…]
The lens inside the eye is made up of water and proteins and works much like a camera lens, says Gretchyn Bailey, editor in chief of Optometry Times. The lens focuses “light onto the retina for clear vision” and also “adjusts the eye’s focus, letting us see things clearly both up close and far away.” However, when the proteins within the lense clump together, this obscures clear vision. “This is a cataract, and over time, it may grow larger and cloud more of the lens, making it harder to see,” says Bailey. [Read more…]
The drug brimonidine, marketed under the brand names Alphagan and Alphagan-P, is routinely used to lower intraocular eye pressure in glaucoma patients. In a recent study published in the journal Cell Death and Disease, researchers observed that the drug reduced the formation of amyloid proteins in the retina of rats. Amyloid proteins are believed to be linked to Alzheimer’s disease, as Alzheimer patients often have amyloid buildup in their retinas. The researchers believe the retina can be viewed as an extension of the brain that provides an opportunity to diagnose and track progression of Alzheimer’s. [Read more…]
Cataracts affect nearly 22 million Americans age 40 and older, according to the American Academy of Ophthalmology. And, according to Chinese researchers Haifang Wang, Hong-Peng Sun, Pei Wang, Yong Xu, and Chen-Wei Pan, older adults with cataracts are more likely to have symptoms of depression. The study, “Cataract and Depressive Symptoms among Older Chinese Adults” was published in the December issue of Optometry and Vision Science, the official journal of the American Academy of Optometry. [Read more…]